Mechanical movement



E. c. REUTLINGER MECHANICAL MOVEMENT Filed June 29; 1944 April 23, 1946.

the cooperating parts in one position Patented Apr. 23, 1946 MECHANICALMOVEMENT mile O. Reutlinger, Somerville, Mass, assignor of one-half toJoseph P. Hussar, Weymouth Landing, Mass.

App ication June 29, 1944, Serial No. 542,670

; Claims.

This inventionv relates to improvements in mechanical movements forconvertinga contin-, uous rotary movement into intermittent rotarymovements such as are employed in display stands where a rotating tablecarries a number of-articles and is so. actuated as to dwell atv uniformintervals at suflicient length of time to enable the articles to beinspected by an observer.

The. invention also is adapted to convert a continuous rotary movementinto an intermittent movement which may be employed intermittently todriveother mechanisms or for any other purposes requiring uniformintermittent movements.

I am aware. that continuous rotary movements have been converted"v intointermittent rotary movements by the well-known Geneva stop mechanismandother devices such as, are employed inintermittently moving films :ofmoving picturecameras and projecting ap aratus which are .ofsomewhatdelicate and complicated construction.

The object of the present invention is to provide a simple andeconomically constructed mechanism of rigid nd durable. character whichinsure practically uniform intermittent movements of either lightorheavy mechanisms and accurate predetermined uniform periods of dwell.

These and other objects and features of the invention will more fullyappear from th following description andthe accompanying drawing'andwill be particularly pointed out in the claims. I

Anillustrative embodiment of the invention is shown in the accompanyingdrawing as applied to a rotating disk or table upon which articles ofmerchandise or the like are displayed.

In the drawing: a

Fig. 1 is a plan view of a rotating table, continuously drivingmechanism therefor, and means for imparting .uniiorm intennittent rotarymovements to the table, illustrating the position of during thetransmission of rotary movement to the table;

2 is .a similar plan view illustratin the position of the parts duringthe period of dwell and the manner in which the table is locked againstrotary movement during that period;

Fig. 3 is'a vertical sectional View on line 3-3 Fig. 1;

Fig. 4 is an end view of thecylindrical driving member having meansadapted to cooperate successively with. studs arranged in equally spacerotatable table; and.

relation upon andproiecting normall from the a vertical sectional ew onine 5*5 in the-base 5 and is firmly clamped thereupon by a nut 1preferably located in a recess countersunk from the under face of thebase 5. 'In the construction illustrated the shaft 3 extends a suitabledistance above the upper face of the table and is held in place by asleeve 8 which fits upon the shaft with its lower end engaging the tableand its upper end portion enga ing a collar 9 which is pinned to theshaft If desired suitable antifriction means, (not shown) may beintroduced between the lower end of the sleeve-and the table and alsobetween the hub 2 and the bearing 4., A circular series of equallyspacedpreferably cylindrical studs III are fixedly secured to the tableat equal radial distances from th axis of theshaft 3 andprojectvperpendicularly therefrom. Desirably; the studs ID are providedwith suitable tapered end portions I l forpurposes hereinafterdescribed.

The continuously actuated driving mechanism comprises a cylinder l2.which-is mounted upon a shaft l3 which is parallel'to the plane ofrotation of the rotatable driven member and has a recess or plurality ofequally spaced transverse recesses l4 having walls l5 extending inparallelism with the axis of the driving member and projections IS onsaid cylinder extending beyond the fiat end I! of thecylinder inalinemcnt with the wall of said recess. The axis ofv rotation of thecontinuously rotating driving member is positioned in such angularrelation to the axis of rotation of the driven member or table and atsuch distance therefrom that during the rotation of the driving memberthe projection 16 ofythe advancing wall will engage the stud l0 andthereby rotate the driven member at, a substantially other mechanismsprojecting end l6 of the wall 15 of the slot 14 engages the stud at adistance below the crest of circular movement of the stud-engaging walland during further movement travels upon the stud toward the plane ofrotation of the driven member thereby tending to increase the speed ofrotation of the driven member until the advancing wall reaches the crestof its movement and thereafter decreases the speed of movement of thedriven member until the stud emerges from the slot in the drivingmember. However, during such movement the stud upon the driven membertraverses inwardly upon the surface of the advancing wall l of thedriving member partially across the length thereof as the wallapproaches the crest of the arc of movement of said wall and thereaftertraverses outwardly along said wall until the stud emerges from the slotin the driving member. As a consequence of these movements theintermittent rotation of the driven member is for all practical purposesuniform.

An important feature of the invention consists in providing means forpositively locking the rotating table against movement during theperiods of dwell. This is accomplished by so constructing the studs onthe driven member and so spacing the studs that upon emergence of thestud which is engaged by the advancing wall l5 of the driving memberfrom the recesses therein that the tapered end of the stud will engagethe cylindrical surface of the driving member and at the same time thenext succeeding stud of the driven member will engage the flat face H ofthe driving member, as shown in Fig. thereby locking the rotating drivenmember against overthrow and also against retrograde movement during theperiod of dwell.

For convenience in manufacture and lightness in construction thecylindrical driving member is of hollow cylindrical form having at oneend a web l8 which is fixedly secured upon the shaft l3 and is parallelto the fiat cylindrical surface of the end ofthe cylinder which isengaged by the stud next succeeding the driven stud during the period ofdwell. V

Any suitable means may be provided for rotating the driving member atadesirable speed of revolution. As illustrated in the accompanying 1drawing the shaft of the driving member is mounted in suitable bearingsin a gear casing l9 and is driven through suitable: gearing, preferablyreduction gearing (not shown), from an actuating shaft 20 whichdesirably is rotated by a suitable electric motor or by any other sourceof power.

The driving member may be provided with any desirable number ofdiametrically opposite recesses as illustrated in Fig. 4, or any othersuitable number of recesses with the studs of the driven member suitablypositioned and spaced to provide for the desired intermittent rotationof the driven member.

While the invention is herein illustrated and described asapplied to arotating display table it is obvious that the driven member may be ofany other kind such as a gear for intermittently driving othermechanisms or for actuating such for which the invention is adapted.

It will be understood therefore that the particular embodiment of theinvention herein shown and described is of an illustrative character andthat various changes in construction and arrangement of parts may bemade within the spirit and scope of the following claims.

said driving member and Having thus described the invention, what isclaimed as new, and desired to be secured by Letter Patent, is:

1. A mechanical movement comprising a uniformly rotatable cylindricaldriving member having a transverse recess provided with a wall extendingin approximate parallelism with the axis of the driving member and aprojection on said cylinder extending beyond the endthereof in alinementwith the wall of the recess, a driven member rotatable in a planeparallel to the axis of provided with a circular series of studs,theaxis of rotation of said driven member being so positioned in offsetangular relation to the axis of the driving member as to cause saidstuds to be successively engaged by said projection and caused totraverse inwardly and outwardly along said projection and the wall ofsaid recess during the continuous rotation of said driving memberthereby to impart substantially uniform intermittent rotative movementsto said driven member. q

2. 'A mechanical movement comprising a uni formly rotatable cylindricaldriving member having 'a fiat endv and a transverse recess provided witha wall extending in approximate parallelism with the axis of the drivingmember and an integral projection on said cylinder extending beyond theend thereof in alinement with the wall of said recess, a driven memberrotatable in .a plane parallel to the axis of said driving member andprovided with a circular series of studs, the axis of rotation of saiddriven member being so positioned in offset angular relation to the axisof the driving member as to cause said studs to be successively engagedby said projection and caused to traverse inwardly and outwardly alongsaid projection and the wall of said recess during the continuousrotation of said driving member thereby to impart substantially uniformintermittent rotative movements to said driven'member, said studs beingso constructed as to engage the cylindrical surface of the drivingmember upon emergence from said recess thereby preventing retrogrademovement ofthe driven member.

3. A mechanical movement comprising a uni-- formly rotatable cylindricaldriving member having a flat end and a transverse recess provided with awall extending in approximate parallelism with the axis of the drivingmember and anfintegral projection on said cylinder extending'beyond theend thereof in alinement with the wall of said recess, a driven memberrotatable in'a plane parallel to the axis of said driving member andprovided with a circular series of studs, the axis of rotation of saiddriven member being so positioned in ofiset angular relation to the axisof the driving member as to cause said studs to be successively engagedby said projection and caused to traverse inwardly and partly outwardlyalong said projection and the wall of said recess during the continuousrotation of said driving member thereby to impart substantially uniformintermittent rotative movements to said driven member, said studs beingso constructed as to engage the cylindrical surface of the drivingmember upon emergence from said recess thereby preventing retrogrademovement of the driven member, and said studs being so spaced apart thatthe next'succeeding stud will engage the hat end of the cylinder andlock the driven member against rotation during the dwell of saidintermittent movement.

4. A mechanical movement comprising a uniformly rotatable cylindricaldriving member having a fiat end and a plurality of uniformly spacedrecesses each provided with a wall extending in parallelism with theaxis of the driving member and a projection on said cylinder extendingbeyond the flat end thereof in alinement with the wall of said recess, adriven member rotatable in a plane parallel to the axis of the drivingmember provided with a circular series of equally spaced studs with theaxis of rotation of the driven member so positioned in offset angularrelation to the axis of the driving member as to cause successive studsto be engaged by said projection and caused to traverse inwardly andoutwardly along said projections and the walls of the respectiverecesses during the continuous rotation of the driving member andthereby impart substantially uniform intermittent rotative movements tosaid driven member, the studs being so constructed and spaced apart thatupon emergence of a driven stud from the recess it will engage thecylindrical surface of the driving member and the next succeeding studwill engage the flat end of the driving member thereby locking thedriven member from rotative movement during each dwell of saidintermittent movement.

5. A mechanical movement comprising a uniformly rotatable cylindricaldriving member having a fiat end and diametrically opposite transverserecesses each provided with a wall extending in parallelism with theaxis of the driving member and a projection on said cylinder extendingbeyond the fiat end thereof in alinement with the wall of said recess, adriven member rotatable in a plane parallel to the axis of said drivingmember and provided with a circular series of five studs with the axisof rotation of said driven member so'positioned in offset angularrelation to the axis of the driving member as to cause successive studsto be engaged by said projections and caused to traverse inwardly andoutwardly along the projections and the wall of the recess during thecontinuous rotation of the driving member and thereby impartsubstantially uniform intermittent rotative movements to said drivenmember, each stud being of such length and so tapered that uponemergence from the recesses of the driving member it will engage thecylindrical surface of the driving member and the next succeeding studwill engage the flat end of the driving member thereby locking thedriven member against rotative movement during each dwell of saidintermittent movement.

EMILE C. REUTLING ER.

